CN107757069A - Manufacturing method of screen with composite net - Google Patents
Manufacturing method of screen with composite net Download PDFInfo
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- CN107757069A CN107757069A CN201610688912.1A CN201610688912A CN107757069A CN 107757069 A CN107757069 A CN 107757069A CN 201610688912 A CN201610688912 A CN 201610688912A CN 107757069 A CN107757069 A CN 107757069A
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- Prior art keywords
- parallel
- metal
- screen
- manufacturing
- warp
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C1/00—Forme preparation
- B41C1/14—Forme preparation for stencil-printing or silk-screen printing
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Printing Plates And Materials Therefor (AREA)
Abstract
The present invention predominantly provides a kind of manufacturing method of screen with composite net, comprises the following steps：One knitmesh step, a plurality of metal warp, a plurality of metal parallel and a plurality of parallel are woven in a manner of interlocking up and down, to form a screen cloth；One pressing step, screen cloth is pressed into required thickness；One is thrown the net step, and a plurality of metal warp, a plurality of metal parallel and a plurality of parallel are stretched and are fixed on a screen frame with a predetermined tension, to form a half tone；One application step, it is coated with screen cloth and forms an emulsion layer；And one cutting contraposition step, multiple opening figures are cut out on emulsion layer by laser.
Description
Technical field
The present invention is a kind of printing screen plate, particularly relates to a kind of compound print for the screen cloth for having and being formed by composite braiding
Brush web plate.
Background technology
Printing screen plate, also known as open-work method (Porous) or oil printing (stencil), it is the printing side in plating transmission such as hole
Formula, ink is added in a punctulate net curtain, ink is printed on printed material placed below through pore, is not required to printing
Position by negative film mimeograph stencil or coating, one emulsion layer of development then in mesh to be manually or mechanically protected by.Because Chang Youyong
Silk is plate, so also referred to as serigraphy.Screen painting is a kind of multiduty printing, can be in the other materials beyond paper, example
Such as clothes, ceramic tile, tea set, electrical equipment, large-scale billboard, circuit board, computer, computer and high-tech Related product, therefore print
Half tone also turns into the indispensable a special kind of skill of modern high technology electronics industry.
In traditional screen printing technology, when by a plurality of warp, parallel is woven to form screen cloth, a plurality of warp, parallel
The material used is all same, such as all using metal or all using Te Duolong, wolfram steel etc., and typically use the print of composite web
Brush half tone is that graph area is wire netting mostly, and in periphery with Te Duolong to save material, it is more in composite halftone for such
Bar warp, parallel number be the same, therefore the figure opening in screen cloth be often limited by it is a plurality of warp, parallel stop and can not under
Ink, when figure line width is more and more thinner, it is easier to cause to stop, at present steel wire line footpath to 13um, special how imperial line footpath minimum arrives
27um。
On the other hand, printing screen plate technology is also applied to the finger-like formula electrode (finger) in solar cell at present
Graphic printing in, for the finger-like formula electrode pattern of solar cell, figure is more thin better, and printing height is higher
It is better, therefore its figure line footpath has been directed towards below 30um；However, in current screen printing technology, finger-like formula electrode figure
Shape can fall within a plurality of warp, parallel obtains crossover node, if figure falls at node, can easily cause printing broken string.
For the foregoing reasons, when half tone technology is applied into solar cell, how using composite webs, finger-like is allowed
Formula electrode pattern will not fall within a plurality of warp, the crossover node of parallel, the problem of being to be solved.
The content of the invention
In view of the shortcomings that above-mentioned prior art, the main object of the present invention is a kind of half tone with composite net of offer
Preparation method, comprise the following steps：One knitmesh step, by a plurality of metal warp, a plurality of metal parallel and a plurality of parallel with upper and lower
Mode staggeredly weaves, to form a screen cloth；One pressing step, screen cloth is pressed into required thickness；One throws the net step, will be more
Bar metal warp, a plurality of metal parallel and a plurality of parallel are stretched and are fixed on a screen frame with a predetermined tension, to form a net
Version；One application step, it is coated with screen cloth and forms an emulsion layer；And one cutting contraposition step, by laser in emulsion layer
On cut out multiple opening figures.
It is preferred that multiple opening figures are parallel to a plurality of metal parallel, and multiple opening figures are a plurality of positioned at wantonly two
In interval region between metal parallel.
It is preferred that removing a plurality of parallel in multiple opening figures in cutting aligns step, while by laser, make more
Do not have a plurality of parallel in individual opening figure.
It is preferred that the proportion of composing of a plurality of metal parallel and a plurality of parallel is 1：1、1：2 or 1：One of 3.
It is preferred that the mode up and down staggeredly in knitmesh step is that a plurality of metal parallel and a plurality of parallel are staggered
With with a plurality of metal warp knitting into screen cloth.
It is preferred that screen cloth can also be staggered by a plurality of metal warp and a plurality of warp to be woven with a plurality of metal parallel
Form.
It is preferred that pressed in step is pressed, including to a plurality of metal warp and a plurality of metal parallel in a manner of pressure, and
A plurality of parallel is pressed with hot pressing mode, screen cloth is pressed into required thickness.
It is preferred that the material of a plurality of metal warp and/or a plurality of golden number parallel be stainless steel, wolfram steel, titanium, aluminium, copper, nickel or
One of other metals.
It is preferred that the material of a plurality of parallel is one of Te Duolong, glass fibre or other plastic materials.
It is preferred that the mesh number of screen cloth is any mesh number in the scope of 100 mesh to 700 mesh.
Other purposes, benefit and the character of innovation of the present invention can be by detailed example of the invention below together with annexed drawings
And learn.
Brief description of the drawings
When and with each alterations when reading, you can be better understood upon taking off before preferable example of the present invention summary and above
Describe in detail.Up to the illustration purpose of the present invention, to be painted with preferably each example of existing category in each schema.It so should be appreciated that the present invention not
It is limited to accurate be set with mode and the apparatus painted.
The flow chart of Fig. 1 manufacturing method of screen with composite net of an embodiment to illustrate the invention；
The schematic diagram of Fig. 2 half tones of the manufacturing method of screen with composite net of an embodiment to illustrate the invention；
Fig. 3 to illustrate the invention the manufacturing method of screen with composite net of an embodiment coating and cutting contraposition
Schematic diagram；
The schematic diagram of Fig. 4 A-A sections in Fig. 3 to illustrate the invention；
The signal of Fig. 5 half tones of the manufacturing method of screen with composite net of another embodiment to illustrate the invention
Figure；
Fig. 6 to illustrate the invention the manufacturing method of screen with composite net of another embodiment coating and cutting pair
The schematic diagram of position；And
The schematic diagram of Fig. 7 B-B sections in Fig. 6 to illustrate the invention.
Wherein, description of reference numerals is as follows：
1st, 6 half tone
2nd, 7 screen cloth
3 screen frames
4th, 8 emulsion layer
5th, 9 opening figure
21 metal warps
23 metal parallels
25 parallels
S10, S20, S30, S40, S50 step
Embodiment
It reference will now be made in detail present invention example shown in the drawings.All schemas represent phase with similar elements symbols as far as possible
Same or similar part.Please note that the schema system plots in simplified form, do not drawn according to precise proportions.
Fig. 1 is a flow chart, to illustrate the manufacturing method of screen with composite net of one embodiment of the invention.Please
Reference picture 1, the manufacturing method of screen with composite net of one embodiment of the invention comprise the following steps：One knitmesh step
S10, a pressing step S20, one throw the net step S30, an application step S40 and a cutting contraposition step S50.Hereinafter, will sequentially
Illustrated for each step.
Fig. 2 is a schematic diagram, to illustrate the manufacturing method of screen with composite net of one embodiment of the invention
Half tone.Fig. 2 is refer to, the knitmesh step S10 utilizes a loom (not shown) by a plurality of stay bolt of metal warp 21, and will be more
Bar metal parallel 23 and a plurality of parallel 25 are woven in a manner of interlocking up and down with a plurality of metal warp 21, to form a screen cloth 2, its
In a plurality of metal parallel 23 and a plurality of parallel 25 proportion of composing can be 1：1、1：2 or 1：One of 3, and in the present invention one
It is to use 1 in embodiment：1 ratio, in other words, be by a metal parallel 23 to parallel 25 staggeredly in a manner of weave
Form, and the material of a plurality of metal warp 21 and/or a plurality of metal parallel 23 be stainless steel, wolfram steel, titanium, aluminium, copper, nickel or other
Metal one of wherein, the material of a plurality of parallel 25 is one of Te Duolong, glass fibre or other plastic materials.Should
It is appreciated that, is that a plurality of metal parallel 23 and a plurality of parallel 25 are staggered with a plurality of gold in an embodiment of the present invention
Category warp 21 is woven into screen cloth 2, and in other embodiments of the present invention, can be by a plurality of metal warp 21 and a plurality of warp
(one of material Te Duolong, glass fibre or other plastic materials) are staggered to be woven with a plurality of metal parallel 23
Into another screen cloth.
Screen cloth 2 is pressed into required thickness by the pressing step S20, and in the pressing step of one embodiment of the invention
In S20, including a plurality of metal warp 21 and a plurality of metal parallel 23 are pressed in a manner of pressure, and to a plurality of parallel 25 with heat
Pressure mode is pressed, and screen cloth 2 is pressed into the required thickness.
The step S30 that throws the net is by a plurality of metal warp 21, a plurality of metal parallel 23 and a plurality of parallel 25 with one predetermined
Power is stretched and is fixed on a screen frame 3, and to form a half tone 1, wherein the mesh number of screen cloth 2 is in the scope of 100 mesh to 700 mesh
Any mesh number.
Fig. 3 is a schematic diagram, to illustrate the manufacturing method of screen with composite net of one embodiment of the invention
Coating and cutting contraposition.Fig. 3 is refer to, the application step S40 is coated with screen cloth 2 and forms an emulsion layer 4 (in figure 3
Illustrated with cross hatching), the material of emulsion layer 4 can be macromolecule resin, and the half tone 1 for being coated with emulsion layer 4 again afterwards is carried out
Dry in the shade or dry.
The cutting contraposition step S50 cuts out multiple opening figures 5 by a laser on emulsion layer 4, and in this hair
In a bright embodiment, multiple opening figures 5 are parallel to a plurality of metal parallel 23, and multiple opening figures 5 are more positioned at wantonly two
(multiple opening figures 5 are between two adjacent metal parallels 23 in figure 3 in interval region between bar metal parallel 23
Interval region), in other words, a plurality of parallel 25 can be fallen within multiple opening figures 5；Furthermore in cutting contraposition step S50,
The a plurality of parallel 25 in multiple opening figures 5 is removed by the laser simultaneously, makes do not have a plurality of parallel in multiple opening figures 5
25；In other words, the present invention can cut out in emulsion layer 4 more finger-like formula electrodes corresponding to solar cell by the laser
Multiple opening figures 5, and a plurality of parallel 25 in multiple opening figures 5 is removed by the laser simultaneously, consequently, it is possible to multiple
The crossover node of a plurality of metal warp 21 and a plurality of parallel 25 of a plurality of metal parallel 23/ is not had in opening figure 5, so will not
Influence strike through.On the other hand, in an embodiment of the present invention, multiple opening figures 5 be with a plurality of metal parallel 23 each
It is parallel；And in other embodiments of the present invention, multiple opening figures 5 can be positioned at the interval of the metal parallel 23 at two intervals
In region, but may not be parallel with each of a plurality of metal parallel 23, thus it is for example possible to it is the metal parallel positioned at two intervals
In 23 interval region, and (being had angle with each of a plurality of metal parallel 23) is set in the form of inclined.
Fig. 4 is a schematic diagram, to illustrate the A-A sections in Fig. 3 of the present invention.Fig. 4 is refer to, from Fig. 3 A-A sections
It can be seen that, half tone 1 includes a plurality of metal parallel 23, multiple opening figures 5 and emulsion layer 4, and each of multiple opening figures 5
It is parallel with each of a plurality of metal parallel 23.
Fig. 5 is a schematic diagram, to illustrate the manufacturing method of screen with composite net of another embodiment of the present invention
Half tone.Fig. 5 is refer to, in an alternative embodiment of the invention, the knitmesh step S10 will be more using a loom (not shown)
The stay bolt of bar metal warp 21, and by a plurality of metal parallel 23 and a plurality of parallel 25 in a manner of interlocking up and down with a plurality of metal warp
21 braidings, to form a screen cloth 7, wherein the proportion of composing of a plurality of metal parallel 23 and a plurality of parallel 25 can be 1：1、1：2 or 1：3
One of, and in the embodiment shown by Fig. 5, it is to use 1：2 ratio, it is with a metal parallel 23 in other words
The staggeredly modes of two parallels 25 is woven and formed, and the material of a plurality of metal warp 21 and/or a plurality of metal parallel 23 is not
Become rusty one of steel, wolfram steel, titanium, aluminium, copper, nickel or other metals, the material of a plurality of parallel 25 is Te Duolong, glass fibre or
One of other plastic materials.It is to be understood that in the embodiment shown by Fig. 5, be by a plurality of metal parallel 23 and
A plurality of parallel 25 is staggered to be woven into screen cloth 2 with a plurality of metal warp 21, and in other embodiments of the present invention, Ke Yishi
A plurality of metal warp 21 and a plurality of warp are staggered to be woven into another screen cloth with a plurality of metal parallel 23.
Screen cloth 7 is pressed into required thickness by the pressing step S20, and in the pressing step of one embodiment of the invention
In S20, including a plurality of metal warp 21 and a plurality of metal parallel 23 are pressed in a manner of pressure, and to a plurality of parallel 25 with heat
Pressure mode is pressed, and screen cloth 7 is pressed into the required thickness.
The step S30 that throws the net is by a plurality of metal warp 21, a plurality of metal parallel 23 and a plurality of parallel 25 with one predetermined
Power is stretched and is fixed on a screen frame 3, and to form a half tone 6, wherein the mesh number of screen cloth 7 is in the scope of 100 mesh to 700 mesh
Any mesh number.
Fig. 6 is a schematic diagram, to illustrate the manufacturing method of screen with composite net of another embodiment of the present invention
Coating and cutting contraposition.Fig. 6 is refer to, the application step S40 is coated with screen cloth 7 and forms an emulsion layer 8 (in Fig. 6
In illustrated with cross hatching), the material of emulsion layer 8 can be macromolecule resin, and the half tone 6 for being coated with emulsion layer 8 again afterwards enters
Row dries in the shade or dried.
The cutting contraposition step S50 cuts out multiple opening figures 9 by a laser on emulsion layer 8, and in this hair
In bright another embodiment, multiple opening figures 9 are parallel to a plurality of metal parallel 23, and multiple opening figures 9 are positioned at wantonly two
In interval region between a plurality of metal parallel 23 (in figure 6 multiple opening figures 9 positioned at two adjacent metal parallels 23 it
Between interval region), in other words, a plurality of parallel 25 is fallen within multiple opening figures 9；Furthermore in cutting contraposition step S50,
The a plurality of parallel 25 in multiple opening figures 9 is removed by the laser simultaneously, makes do not have a plurality of parallel in multiple opening figures 9
25；In other words, the present invention can cut out in emulsion layer 8 more finger-like formula electrodes corresponding to solar cell by the laser
Multiple opening figures 9, and a plurality of parallel 25 in multiple opening figures 9 is removed by the laser simultaneously, consequently, it is possible to multiple
The crossover node of a plurality of metal warp 21 and a plurality of parallel 25 of a plurality of metal parallel 23/ is not had in opening figure 9, so will not
Influence strike through.On the other hand, in an alternative embodiment of the invention, multiple opening figures 9 are each with a plurality of metal parallel 23
It is individual parallel；And in other embodiments of the present invention, multiple opening figures 9 can be between the metal parallel 23 at two intervals
In septal area domain, but may not be parallel with each of a plurality of metal parallel 23, thus it is for example possible to it is the metal latitude positioned at two intervals
In the interval region of line 23, and (being had angle with each of a plurality of metal parallel 23) is set in the form of inclined.
Fig. 7 is a schematic diagram, to illustrate the B-B sections in Fig. 6 of the present invention.Fig. 7 is refer to, from Fig. 6 B-B sections
It can be seen that, half tone 6 includes a plurality of metal parallel 23, multiple opening figures 9 and emulsion layer 8, and each of multiple opening figures 9
It is parallel with each of a plurality of metal parallel 23.
As shown in the above, the manufacturing method of screen provided by the present invention with composite net, through a plurality of gold
The a plurality of parallel of category warp and unlike material is woven into screen cloth, and cuts alignment method by laser, is being coated with emulsion layer
The multiple opening figures parallel with a plurality of metal warp are cut out on screen cloth, and simultaneously by laser by multiple opening figures
A plurality of parallel (non-metallic material, such as Te Duolong) removes, and makes do not have warp, the crossover node of parallel in multiple opening figures,
The infiltration capacity of ink when the method improves screen painting, also overcome and break because the crosspoint on figure to produce in printing
The situation of line, therefore the manufacturing method of screen provided by the present invention with composite net, in the case where not influenceing tension force
The strike through rate of half tone is significantly increased, improves the press quality of product, reaches the purpose of invention, furthermore, the present invention can be adjusted by
The proportion of composing of metal parallel, nonmetallic parallel (or metal warp, nonmetallic warp), to adjust the width of multiple opening figures
Degree, can so print off the finger-like formula electrode of diversified forms with applied in solar cell.
In the representative examples of the explanation present invention, this specification has proposed this method and/or journey of the operation present invention
The step of sequence is as a particular order.But in a way this method or program can't rely on it is presented herein specific
The step of order, this method or program should not necessarily be limited by described specific sequence of steps.As those skilled in the art will recognize that,
Other sequence of steps are also to be feasible.Therefore, the step of particular order proposed in this manual be not construed as
The limitation of right.In addition, it should not necessarily be limited by and carried on the method for the present invention and/or the right of program
The efficiency of the step gone out in order, those skilled in the art can immediately appreciate that the order can change, and be still maintained at this hair
In bright spirit and scope.
Those skilled in the art should be that understanding can be changed to above-mentioned every example, and will not be deviating from its broad sense
Inventive concepts.It is therefore to be understood that the present invention is not limited to the particular example originally taken off, and it is to cover ownership such as each right of rear bearing
Modification defined in it is required that in spirit and scope of the present invention.
Claims (10)
1. a kind of manufacturing method of screen with composite net, it is characterised in that comprise the following steps：
One knitmesh step, a plurality of metal warp, a plurality of metal parallel and a plurality of parallel are woven in a manner of interlocking up and down, with shape
Into a screen cloth；
One pressing step, the screen cloth is pressed into required thickness；
One is thrown the net step, and the metal warp, the metal parallel and the parallel are stretched and are fixed on a predetermined tension
On one screen frame, to form a half tone；
One application step, it is coated with the screen cloth and forms an emulsion layer；And
One cutting contraposition step, multiple opening figures are cut out by laser on the emulsion layer.
2. the manufacturing method of screen according to claim 1 with composite net, it is characterised in that the opening figure
Parallel to the metal parallel, and in interval region of the opening figure between the metal parallel of wantonly two.
3. the manufacturing method of screen according to claim 2 with composite net, it is characterised in that aligned in the cutting
In step, while the parallel in the opening figure is removed by the laser, made in the opening figure without described
Parallel.
4. the manufacturing method of screen according to claim 1 with composite net, it is characterised in that the metal parallel
And the proportion of composing of the parallel is 1：1、1：2 or 1：One of 3.
5. the manufacturing method of screen according to claim 1 with composite net, it is characterised in that in the knitmesh step
This up and down staggeredly mode be, by the metal parallel and the parallel be staggered with the metal warp knitting into this
Screen cloth.
6. the manufacturing method of screen according to claim 1 with composite net, it is characterised in that the screen cloth is also by institute
State metal warp and a plurality of warp is staggered to be formed with metal parallel braiding.
7. the manufacturing method of screen according to claim 1 with composite net, it is characterised in that in the pressing step
In, including the metal warp and the metal parallel are pressed in a manner of pressure, and the parallel is pressed with hot pressing mode,
So that the screen cloth to be pressed into the required thickness.
8. the manufacturing method of screen according to claim 1 with composite net, it is characterised in that the metal warp
And/or the material of the metal parallel is one of stainless steel, wolfram steel, titanium, aluminium, copper, nickel or other metals.
9. the manufacturing method of screen according to claim 1 with composite net, it is characterised in that the material of the parallel
Matter is one of Te Duolong, glass fibre or other plastic materials.
10. the manufacturing method of screen according to claim 1 with composite net, it is characterised in that the mesh of the screen cloth
Number is any mesh number in the scope of 100 mesh to 700 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610688912.1A CN107757069A (en) | 2016-08-19 | 2016-08-19 | Manufacturing method of screen with composite net |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610688912.1A CN107757069A (en) | 2016-08-19 | 2016-08-19 | Manufacturing method of screen with composite net |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107757069A true CN107757069A (en) | 2018-03-06 |
Family
ID=61261557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610688912.1A Pending CN107757069A (en) | 2016-08-19 | 2016-08-19 | Manufacturing method of screen with composite net |
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Cited By (7)
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| CN108466475A (en) * | 2018-03-20 | 2018-08-31 | 仓和精密制造(苏州)有限公司 | Halftone preparation process |
| CN110103568A (en) * | 2019-06-19 | 2019-08-09 | 赫日光电（苏州）有限公司 | A kind of production method of the laser imaging halftone of ladder shaped opening |
| CN110356096A (en) * | 2019-08-28 | 2019-10-22 | 江苏盛矽电子科技有限公司 | A kind of novel weaved formula ties manufacturing method of screen without net |
| WO2019240275A1 (en) * | 2018-06-15 | 2019-12-19 | ミタニマイクロニクス株式会社 | Method for manufacturing screen mask, and exposure device |
| CN111572169A (en) * | 2020-05-22 | 2020-08-25 | 常州亚龙电子科技有限公司 | Screen printing plate without net knots and manufacturing method thereof |
| CN112937076A (en) * | 2021-01-09 | 2021-06-11 | 浙江硕克科技有限公司 | Screen printing plate without net knots and manufacturing process thereof |
| CN114701241A (en) * | 2022-03-10 | 2022-07-05 | 仓和精密制造(苏州)有限公司 | Preparation method of screen printing plate without net knots |
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| CN108466475A (en) * | 2018-03-20 | 2018-08-31 | 仓和精密制造(苏州)有限公司 | Halftone preparation process |
| CN108466475B (en) * | 2018-03-20 | 2020-06-19 | 仓和精密制造(苏州)有限公司 | Screen printing plate preparation process |
| WO2019240275A1 (en) * | 2018-06-15 | 2019-12-19 | ミタニマイクロニクス株式会社 | Method for manufacturing screen mask, and exposure device |
| JP2019217641A (en) * | 2018-06-15 | 2019-12-26 | ミタニマイクロニクス株式会社 | Method for producing screen mask and exposure device |
| JP7111348B2 (en) | 2018-06-15 | 2022-08-02 | ミタニマイクロニクス株式会社 | Screen mask manufacturing method |
| CN110103568A (en) * | 2019-06-19 | 2019-08-09 | 赫日光电（苏州）有限公司 | A kind of production method of the laser imaging halftone of ladder shaped opening |
| CN110356096A (en) * | 2019-08-28 | 2019-10-22 | 江苏盛矽电子科技有限公司 | A kind of novel weaved formula ties manufacturing method of screen without net |
| CN110356096B (en) * | 2019-08-28 | 2021-05-28 | 江苏盛矽电子科技有限公司 | Novel method for manufacturing woven mesh-free screen printing plate |
| CN111572169A (en) * | 2020-05-22 | 2020-08-25 | 常州亚龙电子科技有限公司 | Screen printing plate without net knots and manufacturing method thereof |
| CN111572169B (en) * | 2020-05-22 | 2022-04-12 | 常州亚龙电子科技有限公司 | Screen printing plate without net knots and manufacturing method thereof |
| CN112937076A (en) * | 2021-01-09 | 2021-06-11 | 浙江硕克科技有限公司 | Screen printing plate without net knots and manufacturing process thereof |
| CN114701241A (en) * | 2022-03-10 | 2022-07-05 | 仓和精密制造(苏州)有限公司 | Preparation method of screen printing plate without net knots |
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